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Cannot find symbols

See original GitHub issue

I try to add some extend methods to org.springframework.http.server.reactive.ServerHttpRequest and got compile error cannot find symbols.

step 1

everything is ok.

@Extension
public class ServerHttpRequestExt {
  public static void helloWorld(@This ServerHttpRequest thiz) {
    System.out.println("hello world!");
  }
}

step 2

use ManCharSequenceExt.isNullOrEmpty in package manifold.text.extensions.java.lang.CharSequence of manifold-text so add dependency in pom.xml:

<dependencies>
    <dependency>
        <groupId>systems.manifold</groupId>
        <artifactId>manifold-text</artifactId>
        <version>2021.1.34</version>
    </dependency>
</dependencies>

then got error:

@Extension
public class ServerHttpRequestExt {
  public static void helloWorld(@This ServerHttpRequest thiz, String hello) {
    // cannot find symbols
    if (hello.isNullOrEmpty()) {
      System.out.println("bye!");
    }
    System.out.println("hello " + hello + "!");
  }
}

step 3

add maven-compiler-plugin with some configurations:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.8.0</version>
    <configuration>
        <source>8</source>
        <target>8</target>
        <encoding>UTF-8</encoding>
        <compilerArgs>
            <!-- Configure manifold plugin -->
            <arg>-Xplugin:Manifold no-bootstrap</arg>
        </compilerArgs>
        <!-- Add the processor path for the plugin -->
        <annotationProcessorPaths>
            <path>
                <groupId>systems.manifold</groupId>
                <artifactId>manifold-ext</artifactId>
                <version>${manifold.version}</version>
            </path>
            <path>
                <groupId>systems.manifold</groupId>
                <artifactId>manifold-text</artifactId>
                <version>${manifold.version}</version>
            </path>
        </annotationProcessorPaths>
    </configuration>
</plugin>

got compile error but not same position:


import manifold.ext.rt.api.Extension;
import manifold.ext.rt.api.This;
// cannot find symbols
import org.springframework.http.server.reactive.ServerHttpRequest;


@Extension
public class ServerHttpRequestExt {
  // cannot find symbols
  public static void helloWorld(@This ServerHttpRequest thiz, String hello) {
    if (hello.isNullOrEmpty()) {
      System.out.println("bye!");
    }
    System.out.println("hello " + hello + "!");
  }
}

sample project

here’s a sample

versions

manifold: 2021.1.34 idea: 2021.1.3 maven: 3.6.3

Issue Analytics

State:
Created 2 years ago
Comments:7 (3 by maintainers)

Top GitHub Comments

1reaction

xkyiicommented, Jan 3, 2022

Based on your suggestion, it worked perfectly and I may have missed something else to check. Thanks a million and Happy New Year 🎉

0reactions

rsmckinneycommented, Jan 1, 2022

Yes, that is odd. Manifold definitely works with any Java version 8 or greater. I made a straightforward project based on your examples that demonstrates this. I suggest you start over with a cleaner project based on this one. Happy New Year!

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>spring-example</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
        <manifold.version>2021.1.36</manifold.version>
        <spring-boot.version>2.6.2</spring-boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>systems.manifold</groupId>
            <artifactId>manifold-ext-rt</artifactId>
            <version>${manifold.version}</version>
        </dependency>
        <dependency>
            <groupId>systems.manifold</groupId>
            <artifactId>manifold-text</artifactId>
            <version>${manifold.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>${spring-boot.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                    <encoding>UTF-8</encoding>
                    <compilerArgs>
                        <!-- Configure manifold plugin -->
                        <arg>-Xplugin:Manifold no-bootstrap</arg> 
                    </compilerArgs>
                    <!-- Add the processor path for the plugin -->
                    <annotationProcessorPaths>
                        <path>
                            <groupId>systems.manifold</groupId>
                            <artifactId>manifold-ext</artifactId>
                            <version>${manifold.version}</version>
                        </path>
                        <path>
                            <groupId>systems.manifold</groupId>
                            <artifactId>manifold-text</artifactId>
                            <version>${manifold.version}</version>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                        </manifest>
                        <manifestEntries>
                            <!--class files as source must be available for extension method classes-->
                            <Contains-Sources>java,class</Contains-Sources>
                            <!--JPMS module name-->
                            <Automatic-Module-Name>spring.example</Automatic-Module-Name>
                        </manifestEntries>
                    </archive>
                </configuration>
            </plugin>

        </plugins>
    </build>
</project>